A tattoo is a design or marking made by the insertion of a pigment into punctures or cuts in the skin. In technical terms, tattooing is micro-pigment implantation. Tattoos are a type of body modification.

The word is traced to the Tahitian tatu or tatau, meaning to mark or strike (the latter referring to traditional methods of applying the designs). In Japanese the word used for traditional designs or those that are applied using traditional methods is irezumi ("insertion of ink"), while "tattoo" is used for non-Japanese designs.

Most tattoo enthusiasts refer to tattoos as tats, ink, art or work, and to tattooists as artists. This usage is gaining support, with mainstream art galleries holding exhibitions of tattoo designs and photographs of tattoos.

Tattoo designs that are mass produced and sold to tattoo artists and studios and displayed in shop are known as flash.

Prevalence:

Tattoos have become increasingly popular in recent decades in many parts of the world, particularly in North America, Japan, and Europe. The growth in tattoo culture has seen the influx of new artists into the industry, many of whom have technical and fine art training, and that coupled with advancements in tattoo pigments and the ongoing refinement of the equipment used for tattooing has led to a marked improvement in the quality of tattoos being produced. Movie stars, models, popular musicians and sports figures are just some of the people in the public eye who are commonly tattooed, which in turn has fueled the acceptance of tattoos within mainstream popular culture.

An August, 2005 telephone poll conducted by Zogby International asked 1,042 U.S. residents to give their opinions of tattoos as an art form. A majority of the respondents—54 percent—said tattoos were a form of art, while 40 percent said they were not.

In many traditional cultures tattooing has enjoyed a resurgence, partially in deference to their cultural heritage. Historically, a decline in traditional tribal tattooing in Europe occurred with the spread of Christianity. A decline often occurred in other cultures following European efforts to convert aboriginal and indigenous people to Western religious and cultural practices that held tattooing to be a "pagan" or "heathen" activity. Within some traditional indigenous cultures, tattooing takes place within the context of a rite of passage between adolescence and adulthood.

Diversity:

Tattooing has been a nearly ubiquitous human practice. The Ainu, the indigenous people of Japan, wore facial tattoos. Tattooing was widespread among Polynesian peoples, and in the Philippines, Borneo, Africa, North America, South America, Mesoamerica, Europe, Japan, and China.

Tattooing in prehistoric times:

Tattooing has been a Eurasian practice since Neolithic times. "Ötzi the Iceman", dated circa 3300 BC, exhibits possible therapeutic tattoos (small parallel dashes along lumbar and on the legs). Tarim Basin (West China, Xinjiang) revealed several tattooed mummies of a Western (Western Asian/European) physical type. Still relatively unknown (the only current publications in Western languages are those of J P. Mallory and V H. Mair, The Tarim Mummies, London, 2000), some of them could date from the end of the 2nd millennium BCE.

Tattooing has also been featured prominently in one of the Four Classic Novels in Chinese literature, Water Margin, in which at least two of the 108 characters, 史進 Shi Jin and 燕青 Yan Qing, are described as having tattoos covering nearly the whole of their bodies. In addition, Chinese legend has it that the mother of Yue Fei, the most famous general of the Song Dynasty, tattooed the words 精忠報國 (pinyin: jin zhong bao guo) on his back with her sewing needle before he left to join the army, reminding him to "repay his country with pure loyalty".

Three tattooed mummies (c. 300 BCE) were extracted from the permafrost of Altaï in the second half of the 20th century (the Man of Payzyrk, during the 1940s; one female mummy and one male in Ukok plateau, during the 1990s). Their tattooing involved animal designs carried out in a curvilinear style. The Man of Pazyryk was also tattooed with dots that lined up along the spinal column (lumbar region) and around the right ankle.

Europe:

Pre-Christian Germanic, Celtic and other central and northern European tribes were often heavily tattooed, according to surviving accounts. The Picts were famously tattooed (or scarified) with elaborate dark blue woad (or possibly copper for the blue tone) designs. Julius Ceasar described these tattoos in Book V of his Gallic Wars (54 BCE).

Ahmad ibn Fadlan also wrote of his encounter with the Scandinavian Rus' tribe in the early 10th century, describing them as tattooed from "fingernails to neck" with dark blue "tree patterns" and other "figures." During the gradual process of Christianization in Europe, tattoos were often considered remaining elements of paganism and generally legally prohibited.

According to Robert Graves in his book The Greek Myths, tattooing was common amongst certain religious groups in the ancient Mediterranean world, which may have contributed to the prohibition of tattooing in Leviticus.

Japan:

Tattooing for spiritual and decorative purposes in Japan is thought to extend back to at least the Jomon or paleolithic period (approximately 10,000 BCE) and was widespread during various periods for both the Japanese and the native Ainu. Chinese visitors observed and remarked on the tattoos in Japan (300 BCE).

Middle East:

An archaic practice in the Middle East involved people cutting themselves and rubbing in ash during a period of mourning after an individual had died. It was a sign of respect for the dead and a symbol of reverence and a sense of the profound loss for the newly departed; and it is surmised that the ash that was rubbed into the self-inflicted wounds came from the actual funeral pyres that were used to cremate bodies. In essence, people were literally carrying with them a reminder of the recently deceased in the form of tattoos created by ash being rubbed into shallow wounds cut or slashed into the body, usually the forearms.

Reintroduction in the Western world:

Between 1766 and 1779, Captain James Cook made three voyages to the South Pacific, the last trip ending with Cook's death in Hawaii in February, 1779. When Cook and his men returned home to Europe from their voyages to Polynesia, the salons of Paris and London were soon abuzz with tales of the 'tattooed savages' that Cook and his men had seen on their travels and discovered in previously unknown lands. Crew members of those voyages returned with more than just fabulous tales of what they had seen, many of the sailors returned with tattoos.

Cook's Science Officer and Expedition Botanist, Sir Joseph Banks, returned to England with a tattoo. Banks was a highly regarded member of the English aristocracy and had acquired his position with Cook by putting up what was at the time the princely sum of some ten thousand pounds in the expedition. In turn, Cook brought back with him a tattooed Tahitian chief, whom he presented to King George and the English Court. Many of Cook's men, ordinary seamen and sailors, came back with tattoos, a tradition that would soon become associated with men of the sea in the public's mind and the press of the day. In the process sailors and seamen re-introduced the practice of tattooing in Europe and it spread rapidly to seaports around the globe.

It was in Tahiti aboard the Endeavour, in July of 1769, that Cook first noted his observations about the indigenous body modification and is the first recorded use of the word tattoo. In the Ship's Log Cook recorded this entry : "Both sexes paint their Bodys, Tattow, as it is called in their Language. This is done by inlaying the Colour of Black under their skins, in such a manner as to be indelible."

Cook went on to write, "This method of Tattowing I shall now describe...As this is a painful operation, especially the Tattowing of their Buttocks, it is performed but once in their Lifetimes."

The British Royal Court must have been fascinated with the Tahitian chief's tattoos, because the future King George V had himself inked with the 'Cross of Jerusalem' when he traveled to the Middle East in 1892. He also received a dragon on the forearm from the needles of an acclaimed tattoo master during a visit to Japan. George's sons, The Duke of Clarence and The Duke of York were also tattooed in Japan while serving in the British Admiralty, solidifying what would become a family tradition.

Taking their sartorial lead from the British Court, where Edward VII followed George V's lead in getting tattooed; King Frederick IX of Denmark, the King of Romania, Kaiser Wilhelm II, King Alexander of Yugoslavia and even Tsar Nicholas II of Russia, all sported tattoos, many of them elaborate and ornate renditions of the Royal Coat of Arms or the Royal Family Crest. King Alfonso of modern Spain also had a tattoo.

Tattooing spread among the upper classes all over Europe in the nineteenth century, but particularly in Britain where it was estimated in Harmsworth Magazine in 1898 that as many as one in five members of the gentry were tattooed. There, it was not uncommon for members of the social elite to gather in the drawing rooms and libraries of the great country estate homes after dinner and partially disrobe in order to show off their tattoos. Aside from her consort Prince Albert, there are persistent rumours that Queen Victoria had a small tattoo in an undisclosed 'intimate' location; Denmark's king Frederick was filmed showing his tattoos taken as a young sailor. Winston Churchill's mother, Lady Randolph Churchill, not only had a tattoo of a snake around her wrist, which she covered when the need arose with a specially crafted diamond bracelet, but had her nipples pierced as well. Carrying on the family tradition, Winston Churchill was himself tattooed. In most western countries tattooing remains a subculture identifier, and is usually performed on less-often exposed parts of the body.